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CVE-2026-109292 Details

Description

Open WebUI from 0.6.27 before 0.11.4 contains an information disclosure vulnerability that allows destination servers to obtain user session cookies by receiving the full browser cookie jar on OAuth-mode connections. Operators of OpenAI-compatible connections, OpenAPI tool servers or terminal servers can capture forwarded session cookies from routine requests and replay them to hijack accounts, including administrators.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.8 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/open-webui/open-webui/security/advisories/GHSA-gqfh-jxvw-74rp	CISA-ADP
https://github.com/open-webui/open-webui/commit/3cda47cdb449aac970426f0929c9e5f8bb8bd807	[email protected]
https://github.com/open-webui/open-webui/commit/b71744b17823f7a3a9a64cb363e79a7164ed5b23	[email protected]
https://github.com/open-webui/open-webui/commit/f9f815c86220f809fad5ee1300c44f55dea74c79	[email protected]
https://github.com/open-webui/open-webui/security/advisories/GHSA-gqfh-jxvw-74rp	[email protected]
https://www.vulncheck.com/advisories/open-webui-0.6.27-before-0.11.4-session-token-disclosure-via-oauth-mode-connections	[email protected]

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-200	Exposure of Sensitive Information to an Unauthorized Actor	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 15, 2026	CVE Modified	CISA-ADP
Oct 12, 2026	New CVE Received	[email protected]